{"id":269,"date":"2017-10-20T19:32:02","date_gmt":"2017-10-20T19:32:02","guid":{"rendered":"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/?post_type=ht_kb&p=269"},"modified":"2021-01-04T17:08:21","modified_gmt":"2021-01-04T17:08:21","slug":"modify-your-return-periods","status":"publish","type":"ht_kb","link":"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/knowledge-base\/modify-your-return-periods\/","title":{"rendered":"Modify Your Return Periods"},"content":{"rendered":"

Stormwater Studio has pre-set frequencies or return periods that it uses for the IDF Curves. Those are\u00a01, 2, 3, 5, 10, 25, 50 and 100-year. You have the option to select alternates to the 25-year and\/or the 100-year events. For example, you may wish to use 15 or 20-year frequency instead of the default 25-year.<\/p>\n

It is recommended that you customize the return periods prior to creating or importing new IDF curves. Note that these are simply labels and changing them will not affect the underlying data.<\/p>\n

Click the [Settings] button on the top ribbon menu while viewing the Rainfall Wizard main screen.<\/p>\n

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The following screen appears:<\/p>\n

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Now select alternates to the 25-year and 100-year events. The 25-year label can only be changed to 15 or 20 and\u00a0 the 100-year label can only be changed to 200 or 500. The remaining return periods are fixed and cannot be edited.<\/p>\n

Once you have selected the desired frequencies, click [Ok]. The input tables will now include these frequencies. For example, the new frequencies shown below include the 20 and 500-year events.<\/p>\n

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The plots reflect the new frequencies accordingly.<\/p>\n

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It should be noted that you cannot make changes to the frequencies when setting up your new curves using Hydro-35 or NOAA Atlas 2. This method is limited to the default frequencies. Any changes made to the return periods will revert back to the defaults.<\/p>\n","protected":false},"excerpt":{"rendered":"

Explains how to customize the default frequencies to match yours.<\/p>\n","protected":false},"author":1,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[25],"ht-kb-tag":[],"class_list":["post-269","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-rainfall-idf-curves"],"_links":{"self":[{"href":"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/wp-json\/wp\/v2\/ht-kb\/269","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/wp-json\/wp\/v2\/comments?post=269"}],"version-history":[{"count":8,"href":"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/wp-json\/wp\/v2\/ht-kb\/269\/revisions"}],"predecessor-version":[{"id":1887,"href":"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/wp-json\/wp\/v2\/ht-kb\/269\/revisions\/1887"}],"wp:attachment":[{"href":"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/wp-json\/wp\/v2\/media?parent=269"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/wp-json\/wp\/v2\/ht-kb-category?post=269"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/wp-json\/wp\/v2\/ht-kb-tag?post=269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}